Receptacle-closure.



C. R. KEERAN.

REGEPTAGLB GLOSURB.

APPLIUATION HLED 11110.14, 1912.

1,130,611. Patented 11.112,19.

47577266566: 'zema:

1HE NORRIS PETERS CO.. PHOTO'LIITHO. WASHINGIQN. D. C.

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CHARLES n. kunnen, or BLooivrINGromiLLrnois.

RECEPTACLECLOSURE.

Specification of Letters Patent.

Application ledpDeccmber 14, 1912. Serial No. 736,727.

T0 all whom, it may concern tacles intended to be 4.sealed by vaclmm` The objects of the present invention are to provide a closure of thenature above specilied which will accommodate itself to any imperfections which may be present in the mouth ofthe receptacle, thus insuring a tight and efficient engagement between the@ receptacle and closure; and to provide a closure having the above property which is cheap and `simple of construction.

The invention further consists in the 'features of construction and combination of Vparts hereinafter described and claimed.

Y In the drawings: Figure l is a vertical section of a receptacle provided with the closure of the present invention; Fig. 2 an elevation of said closure with the lower portion partially broken away; and Fig. 3 a detail on an enlarged scale showing the manner in which the closure lconforms to the configuration of the receptacle.

It is a wellk known fact to those versed in the art to which the presentinvention relates that it is a `matter of impossibility to produce any substantial number of recepregularitiesand flaws occurtin large numbers of them, which ofttimes prevent a perfect engagement between the receptacle and closure, and thusproduces a leak causing an inefficient seal,'which in a receptacle sealed by the vacuumr process is a fatal. defect.

Itis one of the primary objects of the present invention to eliminate such defective seals by making the closure of a nature which will at all ktimes configure itself in conformity to the configuration of the open end or neck of the receptacle, and this without increasing the cost of manufacture of the closure or complicating the parts` thereof.

l' end thereof.`

tacles which are perfect in formation about the open end or neck thereof; Certain irl Referring .to the drawings, the closure of the present invention is shown as applied to a receptacle 4 which maybe of any suitable size or configuratiomand the receptacle i terminates in a neck 5 constituting the open 6 of saidjo'pen endare somewhat tapered and "against/#said walls bears the closure when the same is placedin operative position. `The closure of thepresent invention is formed of a single, piece of spring metalfand stamped by -asuitable operation yinto a con-4 figuration providing a top portion 7 constituting thecover `of the same, kan outerrirn or `edge portion f8, and a'rverticallyy depending iiange 9. y Syaidflange is pressed inward ladiacent to itslowerend to provide a groove 10 adapted to receive a sealing gasket 1l7 of ,any suitable formation. The iiange 9 will Patented Mar. 2,1915.Vlr

In practicey the inner walls beslightlycompressed, when forced into the i neck of the receptacle, and owing to the resilient nature of the metal of which it is composed, it will be placed under a spring tension, so that should there be an imperfect surface in the inner walls of said neck, said iiange will spring outward or inward and accommodate itself to such imperfection.'k

This feature will bewell understood by referring to Fig. 3, in which the flange is shown ascompressed at one point, owing toV a bulge being present in a portion ofthe wall 6. will accommodate itselfv to the configuration of the inner war of the neck, and thus'insure y f f a close fit between the neck and closure, thereby o eliminating any leakage which would otherwise occur, owing to the difference in configuration between the neck and the vertical flange of the closure. A

rIhe 'top surface 7 is preferably normally convex in, formation, and owing tol the 'spring property of the metal of which the closure is formed, said top surface will flex inward by reason of the outside pressure when a vacuum is created within the recep tacle. and this fleXing action -will give an int i dication of the creation of a vacuum within the receptacle.

It is understood that thek flexing of the top surface is brought aboutf By this arrangement, the closure 1 ico les

solely and entirely by the relation of pressure within the interior of the receptacle and the outside thereof, andthe surface is Y not intended to be flexed by manual means. lThe rim 8 bears against the top surface of th'e neck as usual, and it will be noted Y Y nel,rv

that said rim is formed of a double thickness of metal, so that it hassufficient rigidity to ,maintain the closure inproper position. In order to insure against any` corro-VV sion laround the inner raw edges of the flange 9, 'I cover saidj edges with. a coat. of.A

paraffin or other non-corrosive material Al2, as bestillustrated in Fig.'2.

Y VIn use, the closure is forced into the neckV of the receptacleafterthe fashion 0f a cork, whenV so forced and after the vacuum has Lformed within 'the receptacle it will be held againstremov'al ,untilV the "top surface is punctured lor the plug loosened from the neck, either of which 'operationspestablishes communications ,between the outside air vand the 'interior of the receptacle, breaking the vacuum. 1

I claim: Y t closure fo'rglass receptacles ymade fronra `single piece 4'of spring metal stamped to provide a cover, and anvertical ringlike portion depending therefrom, "sai d" ringlike 'portionbeing pressed 'inward at lower edge to provide a circumferential groove to receivel a sealing gasket,-saidringlike portion being entirely open at its lower end to Copies of this patent may be ljtiiled for Y' mouth. e

Lpermitvof expansion and contraction theretion e depending.: therefrom, A said ring -like portion being 'pressed inward at'fits lower edgeft'o provide 'a circunriferential groove to receive ya sealing gasket, said ring-hke porglass receptacles cmade tion being entirely open atfits lower end to permit of expansion 'and contractin thereof, and said ringdike 'portion being placed under yspringy 'tension-*when* inserted in the mouth v y" vhereby it configures `itself toany "irregularities of the inner wall of :said

mouth, and a coating'of substance about the lower edge of `saidring-like portion to lpreventcorr'osion'of the raw metal at saidedge, Y

substantially as described.

,1 y CHARLES Witnesses:

W. B. LEACH, YWILLIAM K. BRAOKEN. Y

v vefcen'ts `each, b'y'adressing the Commissioner of Patents. v'VTShillfgtoll, D. C. Y i

R. KEERAN. y y 

